Move deployable conditional to variable; fix pipelines_spec

app/views/projects/ci/builds/_build_pipeline.html.haml

-%li.build{class: ("playable" if subject.playable? && can?(current_user, :update_build, @project))}
+- is_playable = subject.playable? && can?(current_user, :update_build, @project)
+%li.build{class: ("playable" if is_playable)}
   .build-content
-    - if subject.playable? && can?(current_user, :update_build, @project)
+    - if is_playable
       = link_to play_namespace_project_build_path(subject.project.namespace, subject.project, subject, return_to: request.original_url), method: :post, title: 'Play' do
         = render_status_with_link('build', 'play')
         = subject.name

spec/features/projects/pipelines_spec.rb

@@ -193,7 +193,11 @@ describe "Pipelines" do
     end
 
     context 'playing manual build' do
-      before { click_link('Play') }
+      before do
+        within '.pipeline-holder' do
+          click_link('Play')
+        end
+      end
 
       it { expect(@manual.reload).to be_pending }
     end